List of acronyms and initialisms: P

This list contains acronyms, initialisms, and pseudo-blends that begin with the letter P.

For the purposes of this list:

acronym = an abbreviation pronounced as a series of constituent letters, e.g., SARS = severe acute respiratory syndrome
initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc
pseudo-blend = an abbreviation whose extra or omitted letters means that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).

(a) = acronym in the example: SARS – (a) Severe acute respiratory syndrome

(i) = initialism in the example: CD – (i) Compact disc

(p) = pseudo-blend in the example: UNIFEM – (p) United Nations Development Fund for Women

(s) = symbol (none of the above, representing and pronounced as something else; for example: MHz – Megahertz)

Contents:	Top - P0–9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ

p – (s) pico
P – (s) Peta – Phosphorus

P0–9

P2P – (i) Peer-to-peer (networking)
P3I or P³I – (i) PrePlanned Product Improvement

PA

pa – (s) Punjabi language (ISO 639-1 code)
pA – (s) picoampere
Pa
- (s) pascal
- Protactinium
PA
- (a/i) Pamela Anderson
- (s) Panama (ISO 3166 digram)
- Paraguay (FIPS 10-4 country code)
- (i) Partial Agonist
- (s) Pennsylvania (postal symbol)
- petampere
- (i) PolyAmide (Nylon)
- Prince Albert piercing
- Public Address (vocal amplification system)
- Public Affairs
PA 6 – (s) Nylon 6 (PolyAmide) (similarly for PA 11, 12, 46, 66, 610)
PAA – (i) Position Area for Artillery
PAB – (s) Panamanian balboa (ISO 4217 currency code)
PABX – (p) Private Automated Branch eXchange (company phone system)
PAC
- (i) Pan Africanist Congress
- (a) Partial Solar Calibrator
- Patriot Advanced Capabilities
- Political action committee
- (a/i) Primary Auditory Cortex
PACOM – (p) (U.S.) Pacific Command
PADI – (a) Professional Association of Diving Instructors
PAEK – (i) PolyArylEtherKetone
PAFC – (i) Plymouth Argyle Football Club
PAH – (i) Polycyclic aromatic hydrocarbon
PAHO – (i) Pan American Health Organization
PAI
- (i) PolyAmide Imide
- Pre-Approval Inspection (pharma)
PAK – (s) Pakistan (ISO 3166 trigram)
Pakistan – (p) Punjab, Afghan states, Kashmir, sIndh, baluchiSTAN
PAL
- (a) Phase Alternating Line (TV standard)
- (p) Philippine Airlines
PAM – (a/i) Precision Attack Missile
Pamida – (p) Patrick, Michael, and David, sons of the department store chain's co-founder Jim Witherspoon
PAMELA
- (a) Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
- (a) Pedestrian Accessibility and Movement Environment Laboratory
pan – (s) Punjabi language (ISO 639-2 code)
PAN
- (s) Panama (ISO 3166 trigram)
- (a) Personal Area Network
- (i) PolyAcryloNitrile
PANS – (a) Pretty Advanced/Awesome Network Services (cf. POTS)
Pan-STARRS – (p) Panoramic Survey Telescope And Rapid Response System
PAO – (i) Public Affairs Officer
PAPI – (a) Precision Approach Path Indicator (aviation)
PAR – (s) Paraguay (IOC and FIFA trigram, but not ISO 3166)
PARC – (a) Palo Alto Research Center
PAROS – (a) Prevention of an Arms Race in Outer Space (treaty)
PARP – (i) (NATO Partnership for Peace) Planning And Review Process
PARWIG – (a) Power Augmented Ram Wing In Ground (aeroplane wing shape)
PAS – See entry
PASA – (i) PolyAmide, Semi-Aromatic (Nylon)
PASGT – (i) Personnel Armor System, Ground Troops
PASR – (i) Personnel Accounting and Strength Reporting
PATH – (a) Port Authority Trans-Hudson
PAWS
- (a) Phased Array Warning System
- Progressive Animal Welfare Society
PAYD – (a) Pay As You Drive
PAYE – (a) Pay As You Earn

PB

Pb – (s) Lead (Latin Plumbum)
PB – (p) PolyButylene
PBA
- (i) Philippine Basketball Association
- Professional Bowlers Association
PBB – (p) PolyBrominated Biphenyl
PBCK – (i) Problem Between Chair and Keyboard (computer help desk in-joke)
PBD – (p) PolyButaDiene
PBDE – (i) PolyBrominated Diphenyl Ether
PBI – (p) PolyBenzImidazole
PBN – (p) PolyButylene Naphthalate
PBOH – (i) Please Become Old History
PBR
- (i) Pabst Blue Ribbon (beer brand)
- Professional Bull Riders
PBS
- (i) Pharmaceutical Benefits Scheme (Australia)
- Public Broadcasting Service (U.S.)
- Public Broadcasting Services (Malta)
PBRT - may stand for: Physically Based Raytracing, an open source software rendering system for physically correct image synthesis.
PBT – (p) PolyButylene Terephthalate
PBX – (p) Private Branch eXchange (company phone system)

PC

pC – (s) picocoulomb
PC
- (s) petacoulomb
- U.S. Pacific Islands Trust Territory (ISO 3166 digram; obsolete 1986)
- (i) Personal computer
- Player Character (roleplaying)
- Politically Correct / Political Correctness
- post cibum (Latin, "after meals")
PCAS – (i) Planet-Crossing Asteroid Survey
PCB – see entry
PCC
- (i) NATO Partnership Coordination Cell
- Posterior Cingulate Cortex
- Pre-Command Course
- [Presidents Conference Committee]]
PCCB – (i) Porsche Ceramic Composite Brake
PCCIP – (i) President's Commission on Critical Infrastructure Protection
PCE – (p) PerChlorEthylene
PCI
- (s) U.S. Pacific Islands Trust Territory (ISO 3166 trigram; obsolete 1986)
- (i) Peripheral Component Interconnect (computer bus)
PCIe – (i) Peripheral Component Interconnect Express (computer bus)
PCL – (i) Passive Coherent Location
PCMCIA – (i) Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
PCN – (s) Pitcairn Islands (ISO 3166 trigram)
PCP
- (p) phencyclidine
- Pneumocystis jiroveci pneumonia (formerly Pneumocystis carinii)
- (i) Probabilistically Checkable Proof
PCPI – Physician Consortium for Performance Improvement (AMA)
PCR – (i) Polymerase chain reaction
PCSSD - (p) Pulaski County Special School District
PCT
- (i) Pacific Crest Trail
- Patent Cooperation Treaty
PCTE
- (i) Portable Common Tool Environment
- (i) Punjab College of Technical Education
PCZ – (s) Panama Canal Zone (ISO 3166 trigram; obsolete 1980)

PD

Pd – (s) Palladium
PD – (i) per diem (Latin: (calculated) by the day) – Point of Departure – Police Department – Postal District – Potential Difference – Principal Deputy – Public Domain – Privatdozent
PDA – (i) Personal Digital Assistant – Predicted Drift Angle – Public Display of Affection – Push-Down Automaton
PDD – (i) Past Due Date – Presidential Decision Directive
PDF – (i) Panama[nian] Defense Forces (abolished 1990) – Portable Document Format – Principal Direction of Fire
PDG – (i) President Director General – Product Development Group
PDL – (i) Pure Dumb Luck (Texan punk band)
PDN – (i) Pull-Down Network
PDP – (i) Programmable Data Processor – Performance Development Plan
PDQ – (i) Pre-Defined Queries (Siebel packages) – Pretty Damn Quick
PDRY – (i) People's Democratic Republic of Yemen (obsolete since 1990)
PDT – (i) Pacific Daylight [Saving] Time (UTC-7 hours)
PDU – (i) Police Dog Unit – Power Distribution Unit – Protocol Data Unit

PE

PE – (s) Ice Pellets (old style METAR Code) – Peru (ISO 3166 and FIPS 10-4 country code digram) – (i) Physical Education – Premature Ejaculation – (s) Prince Edward Island (postal code) – Price to Earning ratio (used for equity shares) – Plant Extract
PEBCAC – (a) Problem Exists Between Chair and Computer (IT help desk in-joke)
PEBKAC – (a) Problem Exists Between Keyboard and Chair (ditto)
PEEK – (i) PolyEtherEtherKetone
PEET – (a) Partnerships for Enhancing Expertise in Taxonomy
PEI – (i) Prince Edward Island – PolyEtherImide
PEK – (i) PolyEtherKetone
PEN
- (s) Peruvian sol (ISO 4217 currency code)
- (i) Poets, Essayists and Novelists, the original meaning of the initialism of the organization now known as PEN International
- PolyEthylene Naphthalate
PEO – (i) Παγκύπρια Εργατική Ομοσπονδία (Greek for "Pancyprian Federation of Labour") – Philanthropic Educational Organization – PolyEthylene Oxide – Professional Employer Organization – Professional Engineers Ontario
PEPFAR – (a) President's Emergency Plan For AIDS Relief
PER – (s) Peru (ISO 3166 trigram)
perl – (a) usually lower case Practical Extraction and Report Language
PES – (i) PolyEtherSulfone
PEST – (a) UK Public Engagement with Science and Technology
PET – (a/i) Personal Electronic Transactor – Pierre Elliott Trudeau – Positron Emission Tomography (as in PET scan) – PolyEthylene Terephthalate (plastic) – (a) Preliminary English Test
PETA – (a/i) pentaerythritol triacrylate – People Eating Tasty Animals – People for the Ethical Treatment of Animals
PETE – (i) PolyEthyleneTErephthalate
PETP – (i) PolyEthyleneTerePhthalate

PF

pF – (s) picofarad
PF
- (s) French Polynesia (ISO 3166 digram)
- petafarad
- (i) Phenol Formaldehyde (resin)
- Power forward, a player position in Australian rules football, basketball, and ice hockey
PFD – (i) Permanent Fund Dividend = personal flotation device
PFE – (i) Permanent Forest Estate
PFLAG – (p) Parents, Families and Friends of Lesbians and Gays ("pee-flag")
PFIY – (a) Please Fix it Yourself ("pee-fiy")
PFO – (i) Pissed, Fell Over (medical diagnosis in-joke)
PfP – (i) Partnership for Peace

PG

pg – (s) picogram
Pg – (s) petagram
PG
- (s) Papua New Guinea (ISO 3166 digram)
- (i) Parental Guidance (movie rating)
- Point guard (basketball position)
PG-13 – (i) Parental Guidance: Some material may be inappropriate for children under 13 (movie rating)
PGCE – (p) Postgraduate Certificate in Education
PGD – (i) Pre-implantation Genetic Diagnosis
PG&E – (i) Pacific Gas & Electric
PGENI – (i) Pharmaco-Genetics for Every Nation Initiative
PGH – (i) Pre-implantation Genetic Haplotyping
PGK – (s) Papua New Guinea kina (ISO 4217 currency code)
PGM – (i) Precision-Guided Munition
PGP – (i) Pretty Good Privacy

PH

pH – (s) parts of hydrogen (acidity/alkalinity index) – picohenry
PH – (i) Passive Homing (missile guidance system) – (s) petahenry – Philippines (ISO 3166 digram) – (i) Probability of Hit – Public Health – Purple Heart
PHA – (p) PolyHydroxyAlkanoate – (i) Potentially Hazardous Asteroid
Ph.D. – (p) Philosophiæ Doctor (Latin, "Doctor of Philosophy")
PHL – (s) Philippines (ISO 3166 trigram)
PHQ - Patient Health Questionnaire
PHP – (s) Philippine peso (ISO 4217 currency code) – (i) PHP: Hypertext Preprocessor (originally Personal Home Page (Tools))

PI

pi – (s) Pāli language (ISO 639-1 code)
Pi – (s) Pebi
PI – (i) PolyImide – PolyIsoprene – Private Investigator
PIB – (i) PolyIsoButylene
PIC – (i) Person In Charge
PICNIC – (a) Problem In Chair Not In Computer
PICS – (i) Private Investment Capital Subscription
PID – (i) Pelvic Inflammatory Disease – (p) Plan Identification Number – Positive Identification – Procedural Identification – (i) Procurement Identification Description
PIDOOMA– (a/i) Pulled It Directly Out Of My Ass
PIF – (a/i) Partners in Flight
PIG – (a) Pipeline Inspection Gauge
PIGS (also PIIGS or PIIGGS) – (a) Portugal, Italy, Greece, Spain; PIIGS if including Ireland; PIIGGS if including the United Kingdom (Great Britain)
PIM – (a/i) Parameterized Ionospheric Model – Path of Intended Motion – Pediatric Index of Mortality – Personal Information Manager/Management – Presence and Interworking Mobility – Processor-In-Memory – Program Integration Manager – Protocol Independent Multicast
PIN – (a) Personal Identification Number
PINF – (i) People In Need Foundation (Czech charitable organisation)
PIPA – (a/i) Program on International Policy Attitudes
PIR – (i) Priority Intelligence Requirement
PIRA – (a) Provisional Irish Republican Army
PIREPS – (p) Pilot Reports
PITA – (a) Pain In The Ass
P.I - Philippines Islands

PJ

pJ – (s) picojoule
PJ – (s) petajoule
PJHQ – (p) Permanent Joint Headquarters
PJs – (p) Pajamas ("pee-jayz")

PK

K – (s) picokelvin
PK – (s) Pakistan (ISO 3166 and FIPS 10-4 country code digram) – petakelvin – (i) Player Kill[er] – Probability of Kill – (p) PolyKetone – (i) Pulemet Kalashnikova (Russian ПК пулемет Калашникова, "Machinegun Kalashnikov") ^[1]
PKA – (i) Previously Known As – Professionally Known As
PKE – (i) Partnership of Kindermusik Educators [1] & ^[2] & [2]
PKI – (i) Public Key Infrastructure (cryptography)
PKM – (i) Pulemet Kalashnikova Modernizirovanniy (Russian ПКМ пулемет Калашникова модернизированный, "Machinegun Kalashnikov Modernised") ^[1]
PKMS – (i) Pulemet Kalashnikova Modernizirovanniy Stepanova (Russian ПКМС пулемет Калашникова модернизированный Степанова, "Machinegun Kalashnikov Modernised Stepanova") ^[1]
PKMT – (i) Pulemet Kalashnikova Modernizirovanniy Tankoviy (Russian ПКМТ пулемет Калашникова модернизированный танковый, "Machinegun Kalashnikov Modernised Tank") (a.k.a. PKTM ^[1])
PKR – (s) Pakistani rupee (ISO 4217 currency code)
PKT – (i) Pulemet Kalashnikova Tankoviy (Russian ПКТ пулемет Калашникова танковый, "Machinegun Kalashnikov Tank") ^[1]
PKTM – (i) Pulemet Kalashnikova Tankoviy Modernizirovanniy (Russian ПКТМ пулемет Калашникова танковый модернизированный, "Machinegun Kalashnikov Tank Modernised") (a.k.a. PKMT) ^[1]
PKU – (p) Phenylketonuria

PL

pl – (s) Polish language (ISO 639-1 code)
pL – (s) picolitre
PL – (s) Ice Pellets (new style METAR Code) – (s) petalitre – (i) Phase Line (Co-ordination Line) – (s) Poland (ISO 3166 and FIPS 10-4 country code digram)
PLAF – (a/i) People's Liberation Armed Forces – Pluggable look and feel – Product Line Architecture Framework
PLAID – (p) Precision Location and Identification
PLB – (i) Personal Locator Beacon
PLC – (i) Public Limited Company (British)
PLCC – (i) Plastic Leaded Chip Carrier (electronics)
PLD – (i) Probable Line of Deployment
PLEBS – (i) People Lacking Everyday Basic Skills
PLF – (i) Parachute Landing Fall
PLGR – (a) Precision Lightweight GPS Receiver ("plugger")
pli – (s) Pāli language (ISO 639-2 code)
PLI – (i) Position Location Information – Private Lands Initiative – Professional Liability Insurance
PLIF – (a) Planar Laser-Induced Fluorescence
PLK – (i) Polska Liga Koszykówki (Polish, "Polish Basketball League")
PLKK – (i) Polska Liga Koszykówki Kobiet (Polish, "Polish Women's Basketball League")
PLL – (i) Phase-Locked Loop (electronics)
PLM – (i) Polarized Light Microscope/Microscopy
PLMBA - (i) Phospholipid Bilayer Microarray
Pln – (p) Platoon
PLN – (s) Polish zloty (ISO 4217 currency code)
PLO – (i) Palestine Liberation Organization
PLOKTA – (a) Press Lots Of Keys To Abort
PLP – (i) Platonic Life Partner
PLS – (i) Palletized Loading System – Personal Locator System
PLUTO – (a) Pipe Line Under The Ocean
PLW – (s) Palau (ISO 3166 trigram)

PM

pm – (s) picometre
Pm – (s) petametre – Promethium
PM – (s) Panama (FIPS 10-4 country code) – (i) Perry Mason – Phase Modulation – Post Meridiem (Latin "after noon") – Prime Minister – Project Manager – (s) Saint Pierre and Miquelon (ISO 3166 digram)
PMC – (i) Primary Motor Cortex
PMCS – (i) Partial Mission Capable Supply (SM&R code) – Power Management Control System – Professional Military Comptroller School
PME – (i) Professional Military Education
PMI – (i) Positive Material Identification
PMID – (p) PubMed Identifier
PMMA – (i) PolyMethylMethAcrylate
PMOS – (i/a) P-type/Positive Metal-Oxide-Semiconductor transistor ("pee-moss")
PMS – (i) Premenstrual Syndrome
PMSC – (i) NATO Political-Military Steering Committee on Partnership for Peace
PMSL – (i) Piss Myself Laughing (Internet short-hand)

PN

pN – (s) piconewton
PN – (s) petanewton – Pitcairn Islands (ISO 3166 diagram)
PNAC – (i) Project for the New American Century
PNF – (i) Pilot Not Flying (aviation)
PNG – (s) Papua New Guinea (ISO 3166 trigram) – (i) Portable Network Graphic
PNP – (i) Partido Nuevo Progresista – Plug 'N' Play/Pray – Positive Negative Positive
PNS – (s) Pensacola, Florida (IATA airport code)
PNVS – (i) Pilot Night Vision Sensor
PNH – (i) Paroxysmal nocturnal hemoglobinuria – Police Nationale d'Haïti (French, "National Police of Haiti")

PO

Po – (s) Polonium
PO – (s) Dust Devil (METAR Code) – (i) per os (Latin, "by mouth") – (s) Portugal (FIPS 10-4 country code)
PO – (i) Post Office
PO – (i) Purchase Order
POCD – (i) Post-Operative Cognitive Dysfunction
pod – (a) Plain Old Documentation
POD – (i) Payable On Death, Port Of Debarkation
POE – (a) Perl Object Environment – (b) Port Of Embarkation (c) Polyol Ester
POETS – (a) Portable Occultation, Eclipse, and Transit electronic-camera System
POFF – (a) Plain Old Flat File
POG – (a) Passionfruit, Orange and Guava
POGO – (a) Project On Government Oversight
POI – (i) Program Of Instruction
POK – (a/i) Plane Of Knowledge
pol – (s) Polish language (ISO 639-2 code)
POL – (i) Petroleum, Oils and Lubricants – (s) Poland (ISO 3166 trigram)
POLAD – (p) Political Advice
POM – (i) Program Objective Memorandum – PolyOxyMethylene
POMDP – (i) Partially observable Markov decision process
POP – (a/i) Point of Presence – Post Office Protocol – Progesterone Only Pill
por – (s) Portuguese language (ISO 639-2 code)
POR – (i) Proposed Operational Requirement
POS – (a/i) Point Of Sale terminal /Retail industry transaction computers. – (i) Piece Of S**t
POSH – (a) Port Outbound Starboard Home (alleged)
POTC o PotC – (a) Pirates of the Caribbean
POSSLQ – Person of the Opposite Sex Sharing Living Quarters
POT – (a/i) Plane Of Tranquility
POTS – (a) Plain Old Telephone Service (cf. PANS) – Postural Orthostatic Tachycardia Syndrome
POV – (i) Point of view
POW – (i) Prisoner of war

PP

pp
- pages, especially in references, e.g. "A. U. Thor, Title, Journal X, Vol. 1, no. 2 (2010) pp. 13-42."
PP
- (s) Papua New Guinea (FIPS 10-4 country code)
- (i) Passage Point
- per procurationem (Latin, "by proxy")
PPA
- (i) Parahippocampal Place Area
- PolyPhthalAmide
PPASC – (i) (U.S.) Plans and Program Analysis Support Center
PPASSCCATAG - (a) "Proud Parents Against Singles, Seniors, Childless Couples And Teens And Gays", a fictional group formed by Marge Simpson
PPCLI – (i) Princess Patricia's Canadian Light Infantry (regiment)
PPG
- (i) Pittsburgh Plate Glass (the original name of the company now known as PPG Industries)
- The Powerpuff Girls
PPLI – (i) Precise Participant Location & Identification
ppm – (i) Parts Per Million
PPM – (i) Parts Per Million
PPO – (i) PolyPhenylene Oxide
PPP
- (i) Point-to-Point Protocol
- Purchasing Power Parity
PPQ – (i) Pulses Per Quarter (used in music programming, sequencers)
PPQN – (i) Pulses Per Quarter Note (ditto)
PPQT – (i) Pre-Production Qualification Test
PPS
- (i) post postscriptum
- Precise/Precision Positioning Service (GPS)
- PolyPhenylene Sulfide
PPV – (a) Pay-per-view

PQ

PQ
- (s) Province of Québec (obsolete postal code, replaced by QC)
- (i) Parti Québécois

PR

Pr – (i) Pastor or Priest
Pr – (s) Praseodymium
PR – (i) Public Relations – (s) Puerto Rico (postal symbol; ISO 3166 digram)
Prb – (i) Presbyter
PRBO – (i) Point Reyes Bird Observatory
PRC – (i) People's Republic of China
PRFG – (s) Partial Fog (METAR Code)
PRI – (s) Puerto Rico (ISO 3166 trigram)
PRK – (s) Democratic People's Republic of Korea (ISO 3166 trigram)
PRM – (i) Personnel Readiness Management
PRN – (i) pro re nata (Latin, "for the emergency", "as needed")
PRT – (s) Portugal (ISO 3166 trigram) – (i) Provincial Reconstruction Team
PRY – (s) Paraguay (ISO 3166 trigram)

PS

ps
- (s) Pashto language (ISO 639-1 code)
- picosecond
pS – (s) picosiemens
Ps – (s) petasecond
PS
- (s) Palestinian Territory, Occupied (ISO 3166 digram)
- (i) Personnel Services
- (s) petasiemens
- (i) post scriptum (Latin, "written after")
- Power Steering
- Power Supply
- Public School
PooS – Poo Sniffer (Internet short-hand)
PSA
- (i) Paralysis Society of America
- Pharmaceutical Society of Australia
- Pressure-Sensitive Adhesive
- Production Services Association
- Prostate Specific Antigen
- Public Service Announcement
- Public Service Association
PSC
- (i) Personal service corporation
- Primary Somatosensory Cortex
PSE – (s) Palestinian Territory, Occupied (ISO 3166 trigram)
PSG – (i) Pacific Seabird Group
PSI - (i) Pounds per square inch
PSI – (a/i) Portable Source Initiative
PSO
- (i) Peace Support Operations
- Primary Standardisation Office (ABCA)
- Protocol Supporting Organization (of the ICANN)
PSS – (i) Personnel System Support
PST – (i) Pacific Standard Time (UTC-8 hours)
PSU – (i) Pennsylvania State University
PSV
- (i) Philips Sport Vereniging (Dutch for "Philips Sports Union")
- Public Service Vehicle
PsyOp – (p) Psychological Operations

PT

pt – (s) Portuguese language (ISO 639-1 code)
pT – (s) picotesla
Pt – (s) Platinum
PT – (s) petatesla – (i) Physical Training (in the Army) – (s) Portugal (ISO 3166 digram)
PTA – (i) Parent-Teacher Association
PTAL – (i) Public Transport Accessibility Level
PTAN – (i) Precision Terrain Aided Navigation
PTFE – (i) PolyTetraFluoroEthylene
PTI – (i) Pardon the Interruption
PTL – (p) Patrol – (i) Primary Target Line
PTO – (i) Patent and Trademark Office – Please Turn Over
PTSD – (i) Post-Traumatic Stress Disorder
PTUI – (a/i) Plain-Text User Interface ("pa-too-ey") (cf CLI)

PU

Pu – (s) Plutonium
PU
- (s) Guinea-Bissau (FIPS 10-4 country code)
- (i) Polyurethane
- (s) United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986)
Pub – (p) Publication
PUG – (a/i) PET Users Group
PUN – (a/i) Pull-Up Network
PUP – (a/i) Pull-Up Point
PUR – (s) Puerto Rico (IOC and FIFA trigram, but not ISO 3166)
pus – (s) Pashto language (ISO 639-2 code)
PUS – (s) United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)

PV

pV – (s) picovolt
PV – (s) petavolt
PVC – (i) Permanent Virtual Circuit – PolyVinyl Chloride – Premature Ventricular Contraction – Primary Visual Cortex
PvE – (i) Player versus Environment
PvP – (i) Player versus Player
PVR – (i) Personal Video Recorder

PW

pW – (s) picowatt
PW
- (s) Palau (postal symbol; ISO 3166 digram)
- petawatt
PWA – (i) Pirates With Attitude
PWBA – (p) Pension and Welfare Benefits Administration
PwC – (i) PricewaterhouseCoopers (international accounting firm)
PWC – (i) PieceWise Constant (describing a mathematical function)
PWL – (i) PieceWise Linear (describing a mathematical function)
PWLC – (i) PieceWise Linear and Concave/Convex (describing a mathematical function)
PWP – (i) Plot, What Plot? / Porn Without Plot (denotes plotless, um, "feel-good" stories in online fiction, especially fanfic or erotic fiction)
PWR – (i) Pressurized Water Reactor
PWV – (i) Pretoria-Witwatersrand-Vereeniging, the original name for the South African province now known as Gauteng, and still used to refer to the metropolitan agglomeration at the core of the province

PX

PX – (p) Post eXchange

PY

PY – (s) Paraguay (ISO 3166 digram) – Person-Year – (i) Portsmouth yardstick
PYF – (s) French Polynesia (ISO 3166 trigram)
PYG – (s) Paraguayan guaraní (ISO 4217 currency code)
PYMWYMI – (a) Put Your Money Where Your Mouth Is

PZ

PZ – (s) Panama Canal Zone (ISO 3166 digram; obsolete 1980) – (i) Pickup Zone

References

List of acronyms and initialisms

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z